Brick-machine



(No ModeL) 3 SheetsSheet 1.

P. L. $IMPSON.

BRICK MACHINE.

Patented Apr. 14, 1885.

(No ModeL) v a Sheets-Sheet 2.

P. L. SIMPSON.

BRIGK MACHINE. No. 315,849. I Patentedkpr. 14, 1885.

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(N0 Model) 3 Sheets-Sheet 3. P. L. SIMPSON. BRICK MACHINE.

No. 315,849 Patented Apr. 14, 1885.

@mad $1M UNITED STATES PATENT @rrrbn.

PETER L. SIMPSON, OF MINNEAPOLIS, MINNESOTA.

BRICK-MACHlNE.

SPECIFICATION forming part of Letters Patent No. 315,8fl9, dated April14:, 1885.

Application filed October 31, 1884. (No model.)

To all whom it may concern.-

Be it known that I, PETER L. SIMPSON, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements inBrick-Machines, of which the following is a specification, referencebeing had therein to the accompanying drawings.

My invention relates to improvements in brick-machines, the object ofwhich is to produce a machine which will be simple and cheap inconstruction and effective in operation.

My invention therefore consists of two sectors pivoted to the sides ofthe machine, to which are secured the bars for operating the cross-headswhich hold the plungers, said sectors being operated by a double rackraised and lowered by a pitman which connects the double rack with thedriving-wheel.

My invention consists, further, in certain details of construction andcombinations of parts, which will be fully described hereinafter, andpointed out in the claims.

Referring to the drawings, Figure 1 is a front view of the working partsof my machine, the main frame and base for supporting said parts beingomitted. Fig. 2 is a side view of the same. Fig. 3 is a sectional planview on the line w m, Fig. 1. Fig. 4 is a modification of thebase-plate, to which the sectors are pivoted. Fig. 5 is a front view ofthe cross-head to which the lower plunger is attached, showing a weightfor returning the same to the lower or depressed position. Figs. 6 and 7are side views of devices for returning the lower plunger to its lowerposition. Fig. 8 is a front view of the devices shown in Figs. 6 and 7.Fig. Sis a sectional view of the cam for returning the lower plunger, asshown in Fig. 1. Fig. 10 is a top or plan view of the feed-box. Fig. 11is an end view of the feed-box.

A A are guide bars or standards secured in a substantial manner to thebase of the machine and braced or strengthened by being secured to theframe of the machine in any suitable way. The bars or standards AA serveas guides for the guide-block of the double rack-bar, for thecross-heads which support the plunger-s, and for the plungersthemselves, as will more fully appear.

B B are sectors pivoted to the plate 0 or side of the machine at a, andto which the bars D D and E E of the cross'heads F and Clare pivoted,the sectors being operated by a double rack-bar, H, which is secured toa guide-block, I, traveling up and down between the standards A, saidblock I being attached to a wrist-pin, K, on the wheel L by the pitmanM, and by which means a reciprocating motion is imparted to the sectorsB. The bars E E are pivoted to the upper or projecting ends of thesectors above their pivotal point a, while the bars D D are pivoted tothe sectors below their pivotal point, and where a side or bed plate, G,is used, as shown in Fig. 1, a segmental slot, '1 is formed therein topermit the pivot-pins which connect the bars D to the sectors to pass upand down.

In the construction of the frame, as shown in Figs. 3 and 4:, no slotsare required. The lower ends of the bars D are bifurcated, so as to passover each side of the sectors, where they are secured by the pins 0, thespace between the bifurcated arms extending far enough up to allow thebars E E and the upper ends of the sectors to work between them. Theupper ends of the bars D D are secured to the crosshead F, to which theupper plun ger, O, is secured, said plunger being enlarged at the upperend, so as to fitsnugly between the guideways A A. The upper ends of thebars E E are secured to the cross-head G, said bars being provided withslots d, so as to allow the cross-head to be raised up, as will morefully appear.

P is the lower plunger, secured to the crosshead G, said cross-headbeing provided with a slot, 6, to receive the pivot-pin of the lowerplunger, so that when the cam It impinges on the lower end of the lowerplunger it will raise said plunger and eject the brie as from the molds.The lower plunger is also guided in ways in the standards A. V

T is the main driving-pulley, which is connected to any suitable sourceof power by means of the belt U, the shaft of said pulley being providedwith a pinion, f, which meshes with and communicates motion to thepinion V on the shaft 9, said shaft being provided with a pinion,lV,which meshes with and communicates motion to the pinion-wheel L, thiswheel, as before indicated, being connected to the guide of the doublerack H by means of the pitman lVI. j p p A is a pinion secured to theshaft of the pinion-wheel L,which meshes with an idler, B. Said idlermeshes with the pinion C on the shaft D,.

As before indicated, the shaft D is provided with a cam, R, which raisesthelower plunger to eject the newly-formed brick from the mold. The camR is provided with side pieces, h h, which give to a portion of the cama T Shape in cross-section. The lower end of the plunger P is providedwith pendants or extensions it, on the lower ends of which are securedfriction-rollers k k. The projecting portions h of the cam coming inabove the friction-rolh ers, after the brick has been ejected, serves tobring the lower plunger down into thebottom of the mold-cavity.

Z is a friction-wheel secured in the lower end of the plunger, so as toallow of the free passage of the cam. The lower plunger may be returnedto its lower position in the moldcavity by means of the weights E, whichare .hung on the ends of its pivotal pin, the ends of the pin beingextended beyond the sides of the cross-head for that purpose. (See Fig.5.) In lieu of the devices just described for bringing the plunger Pdown into the bottom of the mold, I may use the devices shown in Figs.6, 7, and 8, which are as follows: F is a bracket or pendant secured tothe lower end of the plunger P, and is provided with a slot, it, throughwhich the shaft D passes. The pendant is provided with a foot orprojection, 12, against which the lower end of the arm G impinges as theshaft D is rotated, said arm being secured to the shaft-D, and isprovided with a friction-wheel, 1", which will allow it to roll over thesurface of the projection 19.

It will be noticed that when the plunger P has been raised by the camRtoeject the brick from the mold that the foot ofthe pendant will also beraised, so that the arm G will strike it as it is rotated by the shaftD, and thus return the plunger to the bottom of the mold. This isperhaps the simplest form, and

' one which I shall adopt in practice.

H is the table on which the clay-box I is moved back and forth to fillthe molds of the press with clay.

The clay-box or mold-filler is of the wellknown construction, and isadapted to slide back underneath a clay-hopper, (not shown,) whichsupplies it with the requisite amount of clay to fill the molds, theextension K of the clay-box or mold-filler serving to shut off thesupply of clay during the forward movement of the filler. The box I ismoved backward and forward by means of the following devices: shaft D,in the face or periphery of which is cut a cam -groove, 8, in which thefrictionwheel 25, secured to the downwardly-projecting arm u, is free towork. The feed-box is moved forward while the friction-roller is L isawhe'el or drum secured to the traveling from the point 1 to 2 in thecamgroove, which brings the box I directly over the mold. While thefriction-wheel tis traveling from the point 2to the point 3 the clayboxis at rest a sufficient length of time to allow the charge of clay tofall into the mold.

The clay-box is drawn back under the clay- M is abelt-tightener, whichconsists of two,

friction-wheels, b I), mounted in one end of the pivoted weighted lever,between which the belt U passes, so that if the machine is subjected toan extra or undue strain the weight will be lifted, the outer end of thelever raised, and the belt allowed to slip, thus preventing undue strainor breaking of the machine.

In the operation of the machine it will be observed that when thesectors are moved down in the direction of the arrows l 1, Fig. 1, thatthe rods E E will lift the cross-head G upward, carrying with it thelower plunger. At the same timethe rods D Dare operated to draw down thecross-head F and upper plunger, 0, thus subjecting the clay in the moldsS S to an enormous pressure both from above and below simultaneously.

By the upward movement of the rack-bar and the reversal of the directionof the sectors, as indicated by the arrows 2 2, Fig. 1, the uppercrosshead, F, and plunger 0, will be raised, and the lower cross-head,G, depressed, so as to rest on the lugs or projections 0 0. It will befurther noticed that the IIO pressure exerted in pressing the clay intobrick form is direct, so that there is comparatively no strain on theframe of the machine. The frame,which simply acts as guides, can be madeof light iron, thus reducing the cost and weight of the machine, and atthe sametime adapting it to be readily moved from place to place;

also, the various pinions are geared at the same speed with relation tothe cam-wheel L and feed-box, so that it becomes an easy matter toadjust the machine so that all the 4 movements may take place at theproper moment.

In practice I may find it desirable and expedient to invert theoperating parts of the machine, or, in other words, to turn themachineupside-'down,with the sectors, rack-bar, and'other mechanism foroperating the plungers during the pressing of the brick located in theupper part of the frame of the machine, thus removing these parts awayfrom the wearing and .disintegrating effects of the clay, and suchchanges in the feed-box and mechanism for operating it, and in thedevices for raising the lower plunger to eject the brick from the moldas are necessary to this form of construction, will readily suggestthemselves to the skilled mechanic, and such I consider within the scopeof my invention.

It is obvious that, instead of two sectors and a double-faced rack-bar,only one sector and a single-faced rack-bar may be used. This 'form ofconstruction may be found specially useful and desirable where smallmachines for making a single brick at a time are required, and such aconstruction I consider to be a modification of my invention.

Having thus described my invention,whatI claim, and desire to secure byLetters Patent, 1s

1. In a brick-machine, the sector or sectors pivoted in the sides of themachine and operated by a rack, as described, in' combination with theconnectingrods pivoted to the sector or sectors, and the cross-headscarrying the upper and lower plungers, as set forth.

2. In a brick-machine, the sector or sectors pivoted to the sides of themachine, the compression-rods pivoted to the sector or sectors above andbelow their pivotal points, in combination with the plunger-carryingcrossheads, and suitable mechanism for reciprocating the sector orsectors, whereby the lower cross-head is thrust or drawn upward and theupper cross-head drawn or thrust downward simultaneously to compress theclay in the mold, as set forth.

3. In a brick-machine, the rack for operat ing the pivoted sector orsectors, having a guide-block secured thereto, and adapted to work inguides in the upright bars of the ma chine, in combination with a pitmanand driving-wheel, whereby the sector or sectors are reciprocated oroscillated, as set forth.

4. In a brick-machine, the cross-head G,

adapted to be raised by the sector or sectors B, and compression-rods EE, said cross-head being provided with a compression-plunger capable ofa further movement to eject the brick from the mold, as set forth.

5. The cross-head G, operated as described, provided with a movablecompression-plunger, P, in combination with the cam R, and devices,substantially such as specified, for returning the plunger to the bottomof the moldcavity, as set forth.

6. The shaft D, provided with the cam It, and arm G, in combination withthe plunger 1?, and pendant F, whereby the plunger is positively thrustupward to eject the brick from the mold and returned to the bottom ofthe mold-cavity, as set forth.

7. In a brickmachine, the sectors B B and rods E E, in combination withthe bifurcated rods D D, adapted to project on each side of thesectors,whereby the sectors and rods E are free to work between thebifurcated ends of the bars, as set forth.

8. Abrick-machine provided with sector or sectors which connect with theupper and lower plungers, said sectors being operated by a rack-barwhich is raised and depressed by a pitman connectedtoacontinuously-rotating shaft or wheel, as set forth.

9. In a brick-machine, a feed-box for filling the brick-molds with clay,connected directly to a cam-groove in the periphery of a drum orcylinder, by means of a projecting arm and friction-wheel, as set forth.

In testimony whereof I affix my signature in the presence of twowitnesses.

PETER L. SIMPSON.

Witnesses:

ALEX. MorzULL, WM. L. QUINN.

